MUSCULOSKELETAL SURGERY

Posterior glenohumeral instability remains a difficult problem. There are still many controversies regarding surgical treatment, due to a lack of understanding the pathomechanical issues leading to posterior instability. This article presents a new arthroscopic technique of posterior bone block augmentation, which we found to be effective, repeatable and successful. This technique can be used for combined soft tissue and bony defects as well as for revisions after previous soft tissue reconstructions.

The reverse shoulder prosthesis (RSP) was developed to relieve pain and improve functional outcomes in patients with glenohumeral arthritis and deficiency of the rotator cuff. Even if clinical and functional outcomes regarding the use of the RSP were reported by literature, data concerning progressive deltoid adaptation to this non-anatomic implant are still missing. The purpose of our study was to correlate clinical and functional outcomes with deltoid fibers activity and muscle fatigability in patients with reverse shoulder prosthesis at 2 years follow-up. Twenty patients with reverse shoulder prosthesis due to symptomatic deficient or nonfunctional rotator cuff associated with osteoarthritis were referred by Cervesi Hospital Shoulder and Elbow Surgery Unit. Exclusion criteria were: axillary nerve palsy, a nonfunctioning deltoid muscle, diabetes, previous trauma, malignancy. Furthermore patients who received the RSP for revision arthroplasty, proximal humerus fractures were excluded. All the patients underwent clinical and functional evaluation with the support of electromyography measurement focused on deltoid activity. RSP surgical treatment in shoulder osteoarthritis confirms his good outcome in terms of pain relief. At 2 years anterior and lateral deltoid electromyographic activity was significantly lower compared with contralateral side (p < 0.001). Posterior deltoid activity was no detectable. Range of motion at 2 years of follow-up decreased in terms of forward flexion (p = 0.045), abduction (p = 0.03) and external rotation (p < 0.001). Our study demonstrates that even if the patients remain pain-free, progressive deterioration of the deltoid activity is unavoidable and may lead to poor functional outcomes overtime.

The necessity to reconstruct the pelvic ring after an iliac or iliosacral resection is still debated. Different reconstructive techniques are available, including autologous and homologous graft and custom-made prosthesis. The aim of this study was to evaluate the functional outcome and complications of patients who underwent resection of iliac bone and part of the sacrum for primary bone tumour and reconstruction with an allograft or autograft. We retrospectively evaluated 18 patients (10 males and 8 female) with a mean age of 28 years (range 9–56) who were operated between 1992 and 2015. Six patients were reconstructed with an autograft (Group A) and 12 patients with an allograft (Group B). All complications were recorded. At final follow-up, patients with the original reconstruction still in site were functionally evaluated with MSTS Score. Mean follow-up time was 107 months (range 4–221). Two patients (11.1%) had an external hemipelvectomy for local recurrence, and 3 patients died of the disease. Mean MSTS Score was comparable between the two groups 21.7 (range 20–25) in Group A and 19.9 (range 4–28) in Group B. Patients with partial sacral resection had an increased risk of local recurrence and lower MSTS Score [15.5 (range 7–20) vs. 22.2 (range 4–28)]. Biological reconstruction of pelvic ring with autologous or homologous bone graft gives acceptable functional results. However, the decision on how to reconstruct the pelvic ring after iliac resection should be taken on a patient-by-patient basis.

Low socioeconomic status and Medicaid insurance as a primary payer have been shown to influence resource utilization and risk-adjusted outcomes for total joint arthroplasty. The purpose of this study was to assess the effects of Medicaid primary payer status on outcomes following shoulder arthroplasty (SA). A retrospective review of shoulder surgery patients was undertaken to identify a matched cohort of 51 patients who underwent SA and were stratified based on insurance type into two cohorts: 28 Medicaid (M) patients and 23 non-Medicaid (NM) patients. Baseline demographics, resource utilization, and outcomes were compared as well as pre-and-postoperative patient-reported outcomes (PRO) and functional scores. PRO scores included the American shoulder and elbow surgeons score (ASES), the Penn shoulder score (PSS), and the subjective shoulder value (SSV). There were no statistically significant differences in demographics, comorbidities, or preoperative baseline scores between the cohorts, except for age (M: 55.3 years; NM: 67.5 years; p ≤ 0.001) and smoking status (M: 13 patients; NM: 4 patients; p = 0.029). Medicaid patients showed a slightly higher rate of missed follow-ups (M: 1.1 vs. NM: 0.9; p = 0.370). All Medicaid and non-Medicaid patients experienced significant improvement on PRO scores and active forward flexion. Medicaid patients demonstrated equivalent final postoperative scores for ASES (M: 65; NM: 57; p = 0.454), PSS (M: 63; NM: 51; p = 0.242), SSV (M: 70; NM: 69; p = 1.0) and range of motion measurements. Overall results suggest that Medicaid patients can expect significant improvement after SA and the same level of PRO’s compared to non-Medicaid-insured population. Level III, Retrospective Comparative Design, Treatment Study.

Deformity correction during high tibial osteotomy is generally based on coronal plane alignment. The aim of this study was to measure changes in sagittal and axial plane alignment following medial opening wedge high tibial osteotomy [mHTO], using pre- and postoperative computed tomography [CT] scans, and correlate them with changes in coronal plane. The secondary objective was to correlate changes in functional outcomes with changes in alignment in each plane. The null hypothesis was that sagittal and axial plane alignment does not change significantly following mHTO. This was a prospective, observational study including 30 patients of isolated medial compartment osteoarthritis of the knee joint, between 30 and 60 years of age. Preoperative and postoperative computed tomography scan of bilateral lower limbs from hip to ankle was performed. Varus angle, mechanical axis deviation [MAD] of the lower limb, medial proximal tibial angle [MPTA], tibial torsion and posterior proximal tibial angle [PPTA] were measured. Visual Analogue Scale [VAS 0–10 cm scale] was used for assessment of pain. Functional outcomes were evaluated using Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC], 12 Item Short Form Survey [SF 12] and Tegner Lysholm knee scoring scale. Mean age of patients was 44.59 ± 8.157 years. Mean preoperative varus deformity was 11.13 ± 1.5 degrees, which got corrected to a mean valgus alignment of 3.8 ± 0.93 degrees postoperatively. The mechanical axis deviation was 4.32 ± 1.76 mm lateral to the knee joint center postoperatively. Preoperatively, all knees had external tibial torsion [27.08 ± 2.18 degrees] which was corrected to a mean external tibial torsion of 19.80 ± 3.72 degree after the surgery [P < 0.001]. The overall decrease in sagittal alignment in the present study was 3.70 ± 3.14 degree, 3.97 ± 3.06 degree, 3.92 ± 2.33 degree, for medial, middle and lateral cuts, respectively. There was a significant correlation between change in varus/valgus angle and change in TT and PPTA. Significant positive correlation was seen between change in coronal alignment and functional outcome scores. This study has shown that mHTO significantly changes torsional and sagittal alignment. This is the first study to establish relation between correction in coronal plane and associated changes in sagittal and torsional alignments.

The aim of this study was to investigate the surgical treatment of neurologically compromised advanced Kümmell’s disease. The surgical treatment of Kümmell’s disease has various options according to clinical and radiologic status. Far collapsed Kümmell’s disease patients with neurological deficit need to be treated surgically. We retrospectively analyzed 22 patients operated to our hospital with neurologically compromised Kümmell’s disease between January 2011 and January 2014. Surgical approach was vertebrectomy, mesh cage insertion and segmental cement-augmented pedicle screw fixation. Corpectomy tissue was examined histopathologically. Anterior vertebral heights, kyphotic angle, the visual analog scale (VAS) and the Frankel classification were used to evaluate the effects of the surgery. The mean time of follow-up was 26 months (range, 13–40 months). The VAS, anterior vertebral heights, kyphotic angle and neurological state were improved significantly immediate postoperatively and at the last follow-up compared with the preoperative examinations (P < 0.05). Most of the patients in this study exhibited intravertebral clefts, and postoperative pathology revealed bone necrosis. Posterior vertebrectomy with mesh cage insertion and segmental cement-augmented pedicle screw fixation is an effective option for advanced Kümmell’s disease with neurological deficits.

Intracortical chondromyxoid fibroma is an extremely rare benign neoplasm of cartilaginous origin that usually occurs as an eccentric lesion at the medullar metaphyseal region of long bones. We report the clinicoradiologic aspect of a new case located in the metaphyseal region of the upper tibia and discuss about the differential diagnosis

The aim of this study is to follow morphological imaging characteristics and osteointegration of TruFit® bone graft substitute (BGS) plugs in cases of chondral and osteochondral defects of the articular surface of the knee joint, using high-quality cartilage-sensitive 3-T magnetic resonance imaging (MRI), linked to clinical outcomes. The MRI was used to assess osteointegration and biological evolution of the TruFit® BGS plugs in cases with minimum 5-year follow-up: The TruFit® plug was used in 46 patients for a total of 47 cases with mean age of 57.89 (range 32–80). In this study, we reviewed only the cases with minimum follow-up of 5 years: 5 patients with mean age 64.4 years (minimum 38, maximum 80). The mean follow-up was 71 months (range 63–77). Patients were evaluated clinically, with Lysholm Knee Scoring Scale and MOCART Scale. 3-T MRI, which is preferable to 1.5 T for the better signal-to-noise ratio, contrast and the ability to acquire morphological images at higher spatial resolution, shows a satisfactory integration of bone scaffolds in studied cases for more than 5 years and a satisfactory restoration of the articular cartilage, with the exception of a case of which we still have to consider the factors age, type of lesion and the relationship between the plugs implanted. Clinical and radiological results significantly improve in a longer follow-up time.